Bag tying apparatus



July 17, 1956 A. RO LFES BAG TYING APPARATUS 4 Sheets-Sheet l Filed Nov. 20

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INVENTOR Aueus'r ROLFES Jul 17, 1956 Filed Nov. 20, 1955 A. ROLFES BAG TYING APPARATUS 4 Sheets-Sheet 2 es 5 s4 INVENTOR AUGUST ROLFES July 17, 1956 y ROLFES 2,754,645

BAG TYING APPARATUS Filed Nov. 20, 1953 4 Sheets-Sheet 3 Fusfi. FIG. 5.

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BAG TYING APPARATUS Filed Nov. 20, 1955 4 Sheets-Sheet 4 v N N INVENTOR Aueusr ROLFES ment 47 against which one end of the spring 48 abuts. The lower end of the rod 46, below the abutment 47, is threaded at 49 to receive a guide block 50 and the opposite end of the spring 43 abuts the member 15. The guide block 50 is slotted at 51 to slidably receive the lever 29 and pin shafts 52 journal the rollers 53 in the slot 51 for rolling engagement with the lever 29.

The upper end of the rod 46 above the abutment 47 is provided with a rack 54 which engages a pinion 55. The pinion 55 is mounted in a small semi-circular housing 56 which is formed integral with the housing 42 and communicates therewith. The pinion 55 is fixed to a shaft 57 which extends forwardly of the housing 42 to lie in a position above and parallel to the plate 41. Collars 58 are secured to the shaft 57 on opposite sides of the housing 56 and the collars abutting the housing 56 serve to retain the pinion in engagement with the rack 54.

Forwardly of the housing 42 adjacent the outer end of the plate 41, there is secured to the plate 41, by a fastener 59, a bearing housing 60 in which the shaft 57 is journalled.

On the forward end of the shaft 57, there is a removable chuck 61 which is adapted to retain an S-shaped wire tie twister 62 therein.

The operational elements previously described form the wire tie twisting portion of the invention and the operation of the same will be later described.

Secured to the rear surface of the supporting member 15 and brace member 16, at the medial portions thereof, is a pair of substantially arcuate shaped guide bar members 63. Pivotally mounted intermediate of the members 63, by a pivot pin 64, is a substantially L-shaped foot operated lever 65. A circular foot pedal plate 66 is secured to the end of the lever 65 that extends forwardly of the legs 12.

Secured to the opposite end of the lever 65, at right angles thereto, to provide a T formation, is a short bar 67 and openings 68 are provided at opposite ends of the bar 67 to receive the hooked ends 69 of the finger operating links 70. Cotter pins 71 retain the ends 69 in the openings 68. The opposite ends of the links 70 are also hook shaped, as at 72, and the ends 72 are received in openings 73 in the projections 74 on the substantially S-shaped fingers 75. On one of the ends of each finger 75 is a bearing 76 which is journalled in the bearing housing 77 by means of the bearing screw 78. The bearing housings 77 being mounted at opposite sides of the enlarged end portion 79 of the plate 41.

In Fig. 3 the fingers 75 are shown in non-operative position and a spring 80 connected at one end to the eye 81 fixed to the under surface of the frame 11 and at the opposite end to the opening 81 in the foot lever 65, retains the fingers in this position.

The operational elements previously described form the neck closing or crimping portion of the invention and the operation of the same will be later described.

In Fig. 7 there is shown in operational position with relation to the apparatus an elevated platform or seat 82. The platform 82 is of circular formation, as shown in Fig. 8, and secured to the rear edge for a portion thereof and at right angles thereto, is a band 83. S-shaped supporting members 84 are secured at one end portion to the under surface of the platform 82 at the front ends of the band 83 and lugs 85 depending below the opposite end portions of the S-shaped supporting members 84 are positioned in the open upper ends of the uprights 14 to' the bar 67 secured thereto from the position shown in Fig. 3 to the position shown in Fig. 4. This action results in the forward movement of the links 70, causing the fingers 75 to move from the position shown in Fig. 3 to the position shown in Fig. 4. At this time the fingers have crimped or closed the mouth of the bag B.

A wire tie 85' having a loop 86 at each end is then positioned around the neck of the bag, as shown in Fig. 9. The loops 86 are then engaged with the opposite ends of the wire twister 62.

A hand of the operator is then placed on the plate 37 and downward pressure on the plate 37 causes the downward movement of the lever 29. This action causes the lever 29 to pull the rod 46 downwardly by reason of the engagement of the lever 29 with the rollers 53. The rollers 53 journalled in the guide block 50 which is secured to the rod 46 cause the downward movement thereof.

The downward movement of the rod 46 and the rack 54 causes the pinion 55 to be rotated. Rotation of the pinion 55 causes rotation of the shaft 57 to which the pinion is secured. Rotation of the shaft 57 causes the chuck 61 and wire tie twister 62 to rotate, twisting the wire tie about the neck of the bag B.

Upon release of the pressure on the plate 37 the lever 29 will move upwardly through the action of the spring 48 causing the wire twister 62 to rotate in the opposite direction to be released from the wire tie 85.

The operator then moves his foot from the pedal 66 and the spring will then return the fingers from the position shown in Fig. 4 to the position shown in Fig. 3.

The bag can then be removed from its position. If the bag is of large size, it can be positioned on the table 10, but if the bags to be tied are small in size the table shown in Fig. 8 is positioned as in Fig. 7. Thus the neck of the small bags can be closed and tied as previously described.

From the foregoing description, when taken in connection with the accompanying drawings, the advantages of the construction and the method of operation will be readily apparent to those skilled in the art to which the invention pertains and while the principles of operation of the invention as applied to these embodiments of the invention has been duly described, it is to be understood that the embodiment as shown is merely illustrative and that various and sundry changes or modifications may be made as desired in the construction without departing from the spirit of the invention and the scope of the appended claims.

Having thus described the invention what I claim as new and desire to be secured by Letters Patent is:

1. In a bag crimping and tying apparatus, an elevated table, vertically disposed uprights mounted on said table, supporting and brace members connected to said uprights, parallel guide means secured intermediate of said supporting and brace members, a hand operated lever pivotally mounted on one of said uprights and extending intermediate of said guide means, a wire tie twisting means mounted on said supporting member and operatively connected to said lever, said wire tie twisting means comprising a vertically disposed rod connected to said lever, said rod having a rack portion thereon, a shaft extending at right angles to said rod and having a pinion on one end to coact with the rack on said rod, and a wire tie twister on the opposite end.

2. A bag crimping and tying apparatus as defined by claim 1 wherein a pair of bag crimping fingers are pivotally mounted on said supporting member, and a foot actuated lever pivotally mounted on said apparatus and connected to said crimping fingers for actuating the same.

3. The bag crimping and tying as defined in and by claim 1 wherein a pair of bag crimping fingers are pivotally mounted on said supporting member adjacent said shaft, foot operated lever means mounted on said frame and including a foot pedal extending forwardly under 5 6 said table and an Operating portion extending upwardly References Cited in the file of this patent adjacent said supporting member, and a pair of links (2011- UNITED STATES PATENTS necting said operating portion with said crimping fingers 201 737 Blair Mar 26 1878 Swinging said fingers depression said Pedal 2951420 Otis Mar 18, 1884 gether nd Crimp a bag adjacent Said wire twister. Heinzen Jan- 20 

